How do I make and receive calls via my Telstra Smart Modem?


A recent software upgrade to all Telstra Smart Modems lets you make and receive voice calls if your nbn connection is disrupted, by automatically switching your service from the disrupted nbn connection to Telstra's 4G mobile network.

Simply plug in your compatible handset* into your Telstra Smart Modem using a standard telephone plug and start making calls.



You’ll receive a text or email advising you if your service has switched over to Telstra’s 4G mobile network. For more information regarding this switch, please refer to your text message or email for further assistance.

*Compatible with most Telstra supplied handsets.



Good to know

Voice backup will only work if you have an nbn connection and is not compatible on PSTN, ADSL, Telstra Cable and Telstra Velocity services.

If you are connected on NBN Fibre to the Premises (FTTP) and have your handset connected to the NBN UNI-V port, you will not be able to utilise voice backup over 4G. If you are unsure how your phone service is connected, simply check if your handset is plugged in and working on the Telstra Smart Modem’s green phone port. If it isn’t, your voice service is most likely delivered over the NBN UNI-V port.

Same rates and inclusions apply as your voice call plans.

Important information:

Telstra Smart Modem: Mobile backup is available to premises in 4G coverage areas. Check coverage at [Eligible broadband service required.]1. Your mobile backup connection is limited to speeds of up to 12Mbps for downloads and 1Mbps for uploads. Actual speeds will vary due to local conditions and content accessed. [Voice backup requires a compatible home phone.]




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